BONIES Joint Formula Multi-Pack MINI (20 Bones/ 7 oz) BONIES uses brown rice as its first ingredient and unlike other edible chew bones. BONIES contains no animal by-products like gelatin or animal glycerin. BONIES contains zero saturated and trans-fat. BONIES uses a 100% natural chicken flavor concentrate made from antibiotic-free US chicken livers. BONIES was carefully selected by a board certified animal nutritionist to ensure safety, enjoyment and digestibility.